//===----------------------------------------------------------------------===//
#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
+#include "MCTargetDesc/AMDGPUFixupKinds.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/MC/MCAsmBackend.h"
#include "llvm/MC/MCAssembler.h"
+#include "llvm/MC/MCFixupKindInfo.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/TargetRegistry.h"
class AMDGPUMCObjectWriter : public MCObjectWriter {
public:
- AMDGPUMCObjectWriter(raw_ostream &OS) : MCObjectWriter(OS, true) { }
- virtual void ExecutePostLayoutBinding(MCAssembler &Asm,
- const MCAsmLayout &Layout) {
+ AMDGPUMCObjectWriter(raw_pwrite_stream &OS) : MCObjectWriter(OS, true) {}
+ void executePostLayoutBinding(MCAssembler &Asm,
+ const MCAsmLayout &Layout) override {
//XXX: Implement if necessary.
}
- virtual void RecordRelocation(const MCAssembler &Asm,
- const MCAsmLayout &Layout,
- const MCFragment *Fragment,
- const MCFixup &Fixup,
- MCValue Target, uint64_t &FixedValue) {
+ void recordRelocation(MCAssembler &Asm, const MCAsmLayout &Layout,
+ const MCFragment *Fragment, const MCFixup &Fixup,
+ MCValue Target, bool &IsPCRel,
+ uint64_t &FixedValue) override {
assert(!"Not implemented");
}
- virtual void WriteObject(MCAssembler &Asm, const MCAsmLayout &Layout);
+ void writeObject(MCAssembler &Asm, const MCAsmLayout &Layout) override;
};
AMDGPUAsmBackend(const Target &T)
: MCAsmBackend() {}
- virtual AMDGPUMCObjectWriter *createObjectWriter(raw_ostream &OS) const;
- virtual unsigned getNumFixupKinds() const { return 0; };
- virtual void applyFixup(const MCFixup &Fixup, char *Data, unsigned DataSize,
- uint64_t Value) const;
- virtual bool fixupNeedsRelaxation(const MCFixup &Fixup, uint64_t Value,
- const MCRelaxableFragment *DF,
- const MCAsmLayout &Layout) const {
+ unsigned getNumFixupKinds() const override { return AMDGPU::NumTargetFixupKinds; };
+ void applyFixup(const MCFixup &Fixup, char *Data, unsigned DataSize,
+ uint64_t Value, bool IsPCRel) const override;
+ bool fixupNeedsRelaxation(const MCFixup &Fixup, uint64_t Value,
+ const MCRelaxableFragment *DF,
+ const MCAsmLayout &Layout) const override {
return false;
}
- virtual void relaxInstruction(const MCInst &Inst, MCInst &Res) const {
+ void relaxInstruction(const MCInst &Inst, MCInst &Res) const override {
assert(!"Not implemented");
}
- virtual bool mayNeedRelaxation(const MCInst &Inst) const { return false; }
- virtual bool writeNopData(uint64_t Count, MCObjectWriter *OW) const {
- return true;
- }
+ bool mayNeedRelaxation(const MCInst &Inst) const override { return false; }
+ bool writeNopData(uint64_t Count, MCObjectWriter *OW) const override;
+
+ const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const override;
};
} //End anonymous namespace
-void AMDGPUMCObjectWriter::WriteObject(MCAssembler &Asm,
+void AMDGPUMCObjectWriter::writeObject(MCAssembler &Asm,
const MCAsmLayout &Layout) {
for (MCAssembler::iterator I = Asm.begin(), E = Asm.end(); I != E; ++I) {
- Asm.writeSectionData(I, Layout);
+ Asm.writeSectionData(&*I, Layout);
}
}
-MCAsmBackend *llvm::createAMDGPUAsmBackend(const Target &T, StringRef TT,
- StringRef CPU) {
- return new AMDGPUAsmBackend(T);
+void AMDGPUAsmBackend::applyFixup(const MCFixup &Fixup, char *Data,
+ unsigned DataSize, uint64_t Value,
+ bool IsPCRel) const {
+
+ switch ((unsigned)Fixup.getKind()) {
+ default: llvm_unreachable("Unknown fixup kind");
+ case AMDGPU::fixup_si_sopp_br: {
+ uint16_t *Dst = (uint16_t*)(Data + Fixup.getOffset());
+ *Dst = (Value - 4) / 4;
+ break;
+ }
+
+ case AMDGPU::fixup_si_rodata: {
+ uint32_t *Dst = (uint32_t*)(Data + Fixup.getOffset());
+ *Dst = Value;
+ break;
+ }
+
+ case AMDGPU::fixup_si_end_of_text: {
+ uint32_t *Dst = (uint32_t*)(Data + Fixup.getOffset());
+ // The value points to the last instruction in the text section, so we
+ // need to add 4 bytes to get to the start of the constants.
+ *Dst = Value + 4;
+ break;
+ }
+ }
}
-AMDGPUMCObjectWriter * AMDGPUAsmBackend::createObjectWriter(
- raw_ostream &OS) const {
- return new AMDGPUMCObjectWriter(OS);
+const MCFixupKindInfo &AMDGPUAsmBackend::getFixupKindInfo(
+ MCFixupKind Kind) const {
+ const static MCFixupKindInfo Infos[AMDGPU::NumTargetFixupKinds] = {
+ // name offset bits flags
+ { "fixup_si_sopp_br", 0, 16, MCFixupKindInfo::FKF_IsPCRel },
+ { "fixup_si_rodata", 0, 32, 0 },
+ { "fixup_si_end_of_text", 0, 32, MCFixupKindInfo::FKF_IsPCRel }
+ };
+
+ if (Kind < FirstTargetFixupKind)
+ return MCAsmBackend::getFixupKindInfo(Kind);
+
+ return Infos[Kind - FirstTargetFixupKind];
}
-void AMDGPUAsmBackend::applyFixup(const MCFixup &Fixup, char *Data,
- unsigned DataSize, uint64_t Value) const {
+bool AMDGPUAsmBackend::writeNopData(uint64_t Count, MCObjectWriter *OW) const {
+ OW->WriteZeros(Count);
+
+ return true;
+}
+
+//===----------------------------------------------------------------------===//
+// ELFAMDGPUAsmBackend class
+//===----------------------------------------------------------------------===//
+
+namespace {
+
+class ELFAMDGPUAsmBackend : public AMDGPUAsmBackend {
+public:
+ ELFAMDGPUAsmBackend(const Target &T) : AMDGPUAsmBackend(T) { }
+
+ MCObjectWriter *createObjectWriter(raw_pwrite_stream &OS) const override {
+ return createAMDGPUELFObjectWriter(OS);
+ }
+};
+
+} // end anonymous namespace
- uint16_t *Dst = (uint16_t*)(Data + Fixup.getOffset());
- assert(Fixup.getKind() == FK_PCRel_4);
- *Dst = (Value - 4) / 4;
+MCAsmBackend *llvm::createAMDGPUAsmBackend(const Target &T,
+ const MCRegisterInfo &MRI,
+ const Triple &TT, StringRef CPU) {
+ return new ELFAMDGPUAsmBackend(T);
}